org.ice4j.socket.jdk8.DelegatingSocketChannel Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ice4j
A Java implementation of the ICE protocol
There is a newer version: 3.2-8-gfa5f931
/*
 * ice4j, the OpenSource Java Solution for NAT and Firewall Traversal.
 *
 * Copyright @ 2015 Atlassian Pty Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.ice4j.socket.jdk8;

import java.io.*;
import java.nio.channels.*;

import org.ice4j.socket.*;

import sun.nio.ch.*;

/**
 * Implements a {@code SocketChannel} which delegates (its method calls) to
 * another {@code SocketChannel}. In other words, the former wraps the latter.
 *
 * @author Lyubomir Marinov
 */
class DelegatingSocketChannel
    extends BaseDelegatingSocketChannel
    implements SelChImpl
{
    /**
     * The view of {@link #delegate} as a SelChImpl interface instance
     * required by {@link Selector} and related functionality.
     */
    protected final SelChImpl delegateAsSelChImpl;

    /**
     * Initializes a new {@code DelegatingSocketChannel} instance which is to
     * delegate (its method calls) to a specific {@code SocketChannel}.
     *
     * @param delegate the {@code SocketChannel} the new instance is to delegate
     * (its method calls) to
     */
    public DelegatingSocketChannel(T delegate)
    {
        super(delegate);

        delegateAsSelChImpl
            = (delegate instanceof SelChImpl) ? (SelChImpl) delegate : null;
    }

    /**
     * {@inheritDoc}
     *
     * Forwards to {@link #delegate}.
     */
    @Override
    public FileDescriptor getFD()
    {
        return delegateAsSelChImpl.getFD();
    }

    /**
     * {@inheritDoc}
     *
     * Forwards to {@link #delegate}.
     */
    @Override
    public int getFDVal()
    {
        return delegateAsSelChImpl.getFDVal();
    }

    /**
     * {@inheritDoc}
     *
     * Forwards to {@link #delegate}.
     */
    @Override
    public void kill()
        throws IOException
    {
        delegateAsSelChImpl.kill();
    }

    /**
     * {@inheritDoc}
     *
     * Forwards to {@link #delegate}.
     */
    @Override
    public void translateAndSetInterestOps(int ops, SelectionKeyImpl sk)
    {
        delegateAsSelChImpl.translateAndSetInterestOps(ops, sk);
    }

    /**
     * {@inheritDoc}
     *
     * Forwards to {@link #delegate}.
     */
    @Override
    public boolean translateAndSetReadyOps(int ops, SelectionKeyImpl sk)
    {
        return delegateAsSelChImpl.translateAndSetReadyOps(ops, sk);
    }

    /**
     * {@inheritDoc}
     *
     * Forwards to {@link #delegate}.
     */
    @Override
    public boolean translateAndUpdateReadyOps(int ops, SelectionKeyImpl sk)
    {
        return delegateAsSelChImpl.translateAndUpdateReadyOps(ops, sk);
    }
}